./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f21f1881350863de740f7b7321104b53617dd8ce ................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:44:41,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:44:41,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:44:41,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:44:41,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:44:41,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:44:41,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:44:41,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:44:41,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:44:41,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:44:41,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:44:41,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:44:41,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:44:41,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:44:41,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:44:41,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:44:41,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:44:41,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:44:41,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:44:41,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:44:41,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:44:41,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:44:41,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:44:41,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:44:41,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:44:41,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:44:41,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:44:41,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:44:41,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:44:41,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:44:41,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:44:41,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:44:41,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:44:41,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:44:41,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:44:41,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:44:41,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:44:41,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:44:41,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:44:41,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:44:41,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:44:41,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 10:44:41,692 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:44:41,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:44:41,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:44:41,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:44:41,693 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:44:41,693 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 10:44:41,693 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 10:44:41,693 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 10:44:41,693 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 10:44:41,693 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 10:44:41,694 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 10:44:41,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:44:41,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 10:44:41,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:44:41,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:44:41,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 10:44:41,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 10:44:41,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 10:44:41,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:44:41,695 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 10:44:41,695 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:44:41,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 10:44:41,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:44:41,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:44:41,696 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 10:44:41,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:44:41,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:44:41,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:44:41,696 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 10:44:41,697 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 10:44:41,697 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f21f1881350863de740f7b7321104b53617dd8ce [2019-12-07 10:44:41,796 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:44:41,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:44:41,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:44:41,811 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:44:41,811 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:44:41,812 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2019-12-07 10:44:41,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/data/d246f9348/f1e1c1d1835542e8bae0d5ffc7b6df3e/FLAG8501caa3c [2019-12-07 10:44:42,172 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:44:42,172 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2019-12-07 10:44:42,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/data/d246f9348/f1e1c1d1835542e8bae0d5ffc7b6df3e/FLAG8501caa3c [2019-12-07 10:44:42,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/data/d246f9348/f1e1c1d1835542e8bae0d5ffc7b6df3e [2019-12-07 10:44:42,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:44:42,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:44:42,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:44:42,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:44:42,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:44:42,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276f1053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42, skipping insertion in model container [2019-12-07 10:44:42,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:44:42,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:44:42,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:44:42,304 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:44:42,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:44:42,360 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:44:42,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42 WrapperNode [2019-12-07 10:44:42,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:44:42,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:44:42,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:44:42,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:44:42,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:44:42,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:44:42,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:44:42,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:44:42,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... [2019-12-07 10:44:42,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:44:42,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:44:42,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:44:42,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:44:42,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 10:44:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2019-12-07 10:44:42,435 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2019-12-07 10:44:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:44:42,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:44:42,525 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:44:42,525 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 10:44:42,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:44:42 BoogieIcfgContainer [2019-12-07 10:44:42,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:44:42,527 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 10:44:42,527 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 10:44:42,529 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 10:44:42,529 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 10:44:42,530 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 10:44:42" (1/3) ... [2019-12-07 10:44:42,530 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6041ba82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 10:44:42, skipping insertion in model container [2019-12-07 10:44:42,530 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 10:44:42,530 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:44:42" (2/3) ... [2019-12-07 10:44:42,531 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6041ba82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 10:44:42, skipping insertion in model container [2019-12-07 10:44:42,531 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 10:44:42,531 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:44:42" (3/3) ... [2019-12-07 10:44:42,532 INFO L371 chiAutomizerObserver]: Analyzing ICFG RecursiveNonterminating-1.c [2019-12-07 10:44:42,565 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 10:44:42,565 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 10:44:42,565 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 10:44:42,565 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:44:42,565 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:44:42,565 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 10:44:42,565 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:44:42,565 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 10:44:42,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-12-07 10:44:42,590 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 10:44:42,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 10:44:42,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 10:44:42,595 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 10:44:42,595 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 10:44:42,595 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 10:44:42,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-12-07 10:44:42,596 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 10:44:42,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 10:44:42,596 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 10:44:42,596 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 10:44:42,596 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 10:44:42,601 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L18true assume !!(main_~n~0 <= 2147483646); 11#L19true call rec(main_~n~0, 1 + main_~n~0);< 3#recENTRYtrue [2019-12-07 10:44:42,601 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~x := #in~x;~y := #in~y; 10#L11true assume ~x <= 23 && ~x >= -42; 5#L12true call rec(2 * ~y - 2, 1 + ~x);< 3#recENTRYtrue [2019-12-07 10:44:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:44:42,606 INFO L82 PathProgramCache]: Analyzing trace with hash 39889, now seen corresponding path program 1 times [2019-12-07 10:44:42,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:44:42,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259374091] [2019-12-07 10:44:42,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:44:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:44:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:44:42,677 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:44:42,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:44:42,678 INFO L82 PathProgramCache]: Analyzing trace with hash 29905, now seen corresponding path program 1 times [2019-12-07 10:44:42,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:44:42,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755241827] [2019-12-07 10:44:42,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:44:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:44:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:44:42,687 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:44:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:44:42,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1188333313, now seen corresponding path program 1 times [2019-12-07 10:44:42,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:44:42,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113801257] [2019-12-07 10:44:42,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:44:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:44:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:44:42,708 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:44:42,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 10:44:42 BoogieIcfgContainer [2019-12-07 10:44:42,838 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 10:44:42,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:44:42,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:44:42,839 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:44:42,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:44:42" (3/4) ... [2019-12-07 10:44:42,841 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-12-07 10:44:42,865 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e62adef4-f9d1-480f-9a1a-b2a6efdc4a9e/bin/uautomizer/witness.graphml [2019-12-07 10:44:42,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:44:42,867 INFO L168 Benchmark]: Toolchain (without parser) took 678.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.3 MB in the beginning and 1.0 GB in the end (delta: -108.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:44:42,867 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:44:42,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-12-07 10:44:42,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:44:42,869 INFO L168 Benchmark]: Boogie Preprocessor took 10.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:44:42,869 INFO L168 Benchmark]: RCFGBuilder took 132.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:44:42,869 INFO L168 Benchmark]: BuchiAutomizer took 311.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:44:42,870 INFO L168 Benchmark]: Witness Printer took 26.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:44:42,872 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 172.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 132.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 311.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * Witness Printer took 26.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {x=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a9e3fde=0, \result=0, \old(x)=0, NULL=0, n=0, \old(y)=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] int n = __VERIFIER_nondet_int(); [L18] COND FALSE !(!(n<=2147483646)) [L19] CALL rec(n, n + 1) Loop: [L11] COND TRUE x <= 23 && x >= -42 [L12] CALL rec(2*y-2, x + 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...